摘要
以水稻秸秆为原料,对比了中低温条件下单独超高压(UHP)、单独离子液体微乳液(ILM)和超高压环境下离子液体微乳液(ILM+UHP)3种预处理方法,系统分析了预处理前后样品的化学组成、晶体结构、表面形貌以及酶水解的变化规律。结果表明,采用1-乙基-3甲基咪唑醋酸盐/环己烷/TX-100/正丁醇微乳液处理水稻秸秆,在压强为500 MPa、温度为50℃下处理4 h后,样品中木质素去除率为61.5%,纤维素结晶度指数下降17.3%,微观表面粗糙多孔,酶水解48 h的还原糖产率达75.3%。
Rice straw was pretreated by ultra-high pressure(UHP),ionic liquid micro emulsion(ILM),and ILM in UHP environment(ILM+UHP)at mild temperatures.The effect of the pretreatments on the chemical composition,crystalline structure,surface morphology and enzymatic hydrolysis of rice straw were investigated.The results show that after the pretreatment with 1-ethyl-3-methylimidazolium acetate/cyclohexane/Triton X-100/n-butanol ILM at 500 MPa,50℃,for 4 h,61.5%of the lignin was removed,crystallinity index was reduced by 17.3%,the surface was coarse and porous,and the reducing sugar yield achieved 75.3%.
作者
高静
郑才菊
谈婷如
张迪
刘书成
吉宏武
GAO Jing;ZHENG Caiju;TAN Tingru;ZHANG Di;LIU Shucheng;JI Hongwu(College of Food Science and Technology,Guangdong Ocean University,Zhanjiang 524088,Guangdong,China;Key Laboratory of Advanced Processing of Aquatic Products of Guangdong Higher Education Institution,Zhanjiang 524088,Guangdong,China;Guangdong Provincial Key Laboratory of Aquatic Product Processing and Safety,Zhanjiang 524088,Guangdong,China)
出处
《化工学报》
EI
CAS
CSCD
北大核心
2018年第8期3686-3692,共7页
CIESC Journal
基金
国家自然科学基金项目(21706040)
广东省创新强校项目(2015KQNCX061
GDOU2015050240)~~
关键词
生物质
离子液体
微乳液
超高压
预处理
水解
biomass
ionic liquids
micro emulsion
ultra-high pressure
pretreatment
hydrolysis
